1 // (c) Copyright 2006-2009 notaz, All rights reserved.
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2 // Free for non-commercial use.
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4 // For commercial use, separate licencing terms must be obtained.
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8 #include "../common/emu.h"
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9 #include "../common/menu.h"
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10 #include "../common/plat.h"
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11 #include "../common/arm_utils.h"
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12 #include "../linux/sndout_oss.h"
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13 #include "asm_utils.h"
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14 #include "version.h"
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16 #include <pico/pico_int.h>
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18 #define USE_320_SCREEN 1
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21 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
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22 static unsigned char temp_frame[g_screen_width * g_screen_height * 2];
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23 unsigned char *PicoDraw2FB = temp_frame;
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24 static int osd_fps_x;
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25 char cpu_clk_name[] = "unused";
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28 void pemu_prep_defconfig(void)
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30 // XXX: move elsewhere
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31 g_menubg_ptr = temp_frame;
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34 void pemu_validate_config(void)
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39 static void osd_text(int x, int y, const char *text)
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41 int len = strlen(text)*8;
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43 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {
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47 for (h = 0; h < 8; h++) {
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48 p = (int *) ((unsigned char *) g_screen_ptr+x+g_screen_width*(y+h));
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49 for (i = len; i; i--, p++) *p = 0xe0e0e0e0;
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51 emu_text_out8(x, y, text);
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56 for (h = 0; h < 16; h++) {
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57 p = (int *) ((unsigned short *) g_screen_ptr+x+g_screen_width*(y+h));
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58 for (i = len; i; i--, p++) *p = 0;//(*p>>2)&0x39e7;
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60 text_out16(x, y, text);
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64 static void draw_cd_leds(void)
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68 // if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?
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69 old_reg = Pico_mcd->s68k_regs[0];
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71 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {
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73 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;
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74 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;
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75 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+ 4) =
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76 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+ 4) =
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77 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+ 4) = col_g;
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78 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+12) =
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79 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+12) =
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80 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+12) = col_r;
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83 unsigned int *p = (unsigned int *)((short *)g_screen_ptr + g_screen_width*2+4);
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84 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;
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85 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;
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86 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;
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87 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;
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88 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
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92 #ifdef USE_320_SCREEN
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94 static int EmuScanBegin16(unsigned int num)
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96 DrawLineDest = (unsigned short *)g_screen_ptr + num*800 + 800/2 - 320/2;
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97 //int w = (Pico.video.reg[12]&1) ? 320 : 256;
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98 //DrawLineDest = (unsigned short *)g_screen_ptr + num*w;
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103 #else // USE_320_SCREEN
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105 static int EmuScanEnd16(unsigned int num)
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107 unsigned char *ps=HighCol+8;
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108 unsigned short *pd;
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109 unsigned short *pal=HighPal;
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110 int sh = Pico.video.reg[0xC]&8;
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111 int len, mask = 0xff;
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113 pd=(unsigned short *)g_screen_ptr + num*800*2 + 800/2 - 320*2/2;
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115 if (Pico.m.dirtyPal)
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116 PicoDoHighPal555(sh);
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118 if (Pico.video.reg[12]&1) {
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125 if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI))
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126 mask=0x3f; // messed sprites, upper bits are priority stuff
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129 clut_line(pd, ps, pal, (mask<<16) | len);
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131 for (; len > 0; len--)
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133 unsigned int p = pal[*ps++ & mask];
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135 *(unsigned int *)pd = p;
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136 *(unsigned int *)(&pd[800]) = p;
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144 #endif // USE_320_SCREEN
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146 void pemu_update_display(const char *fps, const char *notice)
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148 if (notice || (currentConfig.EmuOpt & EOPT_SHOW_FPS)) {
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150 osd_text(4, 460, notice);
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151 if (currentConfig.EmuOpt & EOPT_SHOW_FPS)
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152 osd_text(osd_fps_x, 460, fps);
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154 if ((PicoAHW & PAHW_MCD) && (currentConfig.EmuOpt & EOPT_EN_CD_LEDS))
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158 void plat_video_toggle_renderer(int is_next, int force_16bpp, int is_menu)
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160 // this will auto-select SMS/32X renderers
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161 PicoDrawSetColorFormat(1);
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164 void plat_video_menu_enter(int is_rom_loaded)
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168 void plat_video_menu_begin(void)
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170 memcpy32(g_screen_ptr, g_menubg_ptr, g_screen_width * g_screen_height * 2 / 4);
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173 void plat_video_menu_end(void)
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177 void plat_status_msg_clear(void)
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179 unsigned short *d = (unsigned short *)g_screen_ptr + g_screen_width * g_screen_height;
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180 int l = g_screen_width * 8;
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181 memset32((int *)(d - l), 0, l * 2 / 4);
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184 void plat_status_msg_busy_next(const char *msg)
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186 plat_status_msg_clear();
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187 pemu_update_display("", msg);
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188 emu_status_msg("");
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192 void plat_status_msg_busy_first(const char *msg)
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194 // memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);
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195 plat_status_msg_busy_next(msg);
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198 void plat_update_volume(int has_changed, int is_up)
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200 static int prev_frame = 0, wait_frames = 0;
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201 int vol = currentConfig.volume;
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206 if (vol < 99) vol++;
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208 if (vol > 0) vol--;
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211 sndout_oss_setvol(vol, vol);
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212 currentConfig.volume = vol;
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213 emu_status_msg("VOL: %02i", vol);
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214 prev_frame = Pico.m.frame_count;
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218 void pemu_forced_frame(int opts)
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220 int po_old = PicoOpt;
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221 int eo_old = currentConfig.EmuOpt;
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224 PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites
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225 currentConfig.EmuOpt |= 0x80;
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227 #ifdef USE_320_SCREEN
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228 PicoDrawSetColorFormat(1);
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229 PicoScanBegin = EmuScanBegin16;
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231 PicoDrawSetColorFormat(-1);
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232 PicoScanEnd = EmuScanEnd16;
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234 Pico.m.dirtyPal = 1;
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235 PicoFrameDrawOnly();
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238 currentConfig.EmuOpt = eo_old;
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241 static void updateSound(int len)
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244 if (PicoOpt & POPT_EN_STEREO)
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247 if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && !sndout_oss_can_write(len))
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250 /* avoid writing audio when lagging behind to prevent audio lag */
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251 if (PicoSkipFrame != 2)
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252 sndout_oss_write(PsndOut, len);
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255 void pemu_sound_start(void)
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257 static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
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258 int target_fps = Pico.m.pal ? 50 : 60;
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262 if (currentConfig.EmuOpt & 4)
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264 int snd_excess_add;
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265 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old)
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266 PsndRerate(Pico.m.frame_count ? 1 : 0);
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268 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;
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269 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",
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270 PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);
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271 sndout_oss_start(PsndRate, 16, (PicoOpt&8)>>3);
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272 sndout_oss_setvol(currentConfig.volume, currentConfig.volume);
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273 PicoWriteSound = updateSound;
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274 plat_update_volume(0, 0);
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275 memset(sndBuffer, 0, sizeof(sndBuffer));
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276 PsndOut = sndBuffer;
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277 PsndRate_old = PsndRate;
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278 PicoOpt_old = PicoOpt;
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279 pal_old = Pico.m.pal;
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283 void pemu_sound_stop(void)
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287 void pemu_sound_wait(void)
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289 // don't need to do anything, writes will block by themselves
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292 void plat_debug_cat(char *str)
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296 void emu_video_mode_change(int start_line, int line_count, int is_32cols)
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300 // clear whole screen in all buffers
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301 memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);
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304 void pemu_loop_prep(void)
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306 #ifdef USE_320_SCREEN
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307 PicoDrawSetColorFormat(1);
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308 PicoScanBegin = EmuScanBegin16;
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310 PicoDrawSetColorFormat(-1);
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311 PicoScanEnd = EmuScanEnd16;
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314 pemu_sound_start();
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317 void pemu_loop_end(void)
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319 int po_old = PicoOpt;
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320 int eo_old = currentConfig.EmuOpt;
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323 memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);
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325 /* do one more frame for menu bg */
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326 PicoOpt &= ~POPT_ALT_RENDERER;
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327 PicoOpt |= POPT_EN_SOFTSCALE|POPT_ACC_SPRITES;
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328 currentConfig.EmuOpt |= EOPT_16BPP;
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330 PicoDrawSetColorFormat(1);
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331 Pico.m.dirtyPal = 1;
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335 currentConfig.EmuOpt = eo_old;
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338 /* XXX: avoid busy wait somehow? */
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339 void plat_wait_till_us(unsigned int us_to)
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343 spend_cycles(1024);
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344 now = plat_get_ticks_us();
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346 while ((signed int)(us_to - now) > 512)
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348 spend_cycles(1024);
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349 now = plat_get_ticks_us();
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353 void plat_video_wait_vsync(void)
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357 const char *plat_get_credits(void)
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359 return "PicoDrive v" VERSION " (c) notaz, 2006-2009\n\n\n"
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361 "fDave: Cyclone 68000 core,\n"
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362 " base code of PicoDrive\n"
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363 "Reesy & FluBBa: DrZ80 core\n"
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364 "MAME devs: YM2612 and SN76496 cores\n"
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365 "rlyeh and others: minimal SDK\n"
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366 "Squidge: mmuhack\n"
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367 "Dzz: ARM940 sample\n"
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368 "GnoStiC / Puck2099: USB joy code\n"
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369 "craigix: GP2X hardware\n"
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370 "ketchupgun: skin design\n"
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372 "special thanks (for docs, ideas):\n"
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373 " Charles MacDonald, Haze,\n"
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374 " Stephane Dallongeville,\n"
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375 " Lordus, Exophase, Rokas,\n"
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376 " Nemesis, Tasco Deluxe";
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